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When nacl is heated in atmosphere with sodium vapours then chlorine diffuse from its place and goes to the surface of the lattice where it reacts with sodium to form nacl during this rxn an electron being diffused which enters the lattice and occupies the space of anionic site of cl this proccess in which an anionunc site is being occupies by the unpaired electron is known as f centre

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In Under sea water the pressure is too high, then why it so cold?

Posted by Sankeerth M 7 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Naveen Shah 7 years, 10 months ago

Ocean water becomes cold by evaporation from its surface. Water which converts to vapor by evaporation carries away heat of liquid water with it leaving liquid water of ocean colder. This cold water from the surface of water being denser goes down to the bottom and hot water from bottom come up which becomes cold on evaporation. Thus ocean water becomes cold.

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When urea is added to water the freezing point decreases.Explain why?

Posted by Prince Shah 7 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Vaibhav Tyagi 7 years, 10 months ago

It also depend upon molar mass . As glucose have higher mopar mass than urea ,so urea solution will more cool than glucose.

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Govind Gour 7 years, 10 months ago

Because the freezing point of solvent is always more then solution

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Polar polarized light

Posted by Samyak Meshram 7 years, 10 months ago

CBSE > Class 12 > Chemistry

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I have problems in numericals but not in theory plz tell me what should I do so that I will solve problems easily.

Posted by Giriraj Kashyap 7 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanaya Seth 7 years, 10 months ago

If your theory is good you can solve numerical easily. ..

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I have problems in numericals but not in theory so what should I do

Posted by Giriraj Kashyap 7 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Giriraj Kashyap 7 years, 10 months ago

Tnks to all of u

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Sanaya Seth 7 years, 10 months ago

You do meditation and make your mind cool

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Explain different type cubic unit cell

Posted by Sachin Kumar Mahato 7 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Arsheen Mushtaq 7 years, 10 months ago

There are 3 types of cubic unit cell 1-Simple cubic unit cell -In this arrangement the atoms of the corners touch each other. 2-Body centred cubic unit cell -In this arrangement the three atoms along the diagonal touch each other. 3-Face centred cubic unit cell -In this arrangement the three atoms along the face diagonal touch each other.

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KF has NaCL structure . What is the distance between K+and F- in KF if density is 2.48gm/cm

Posted by Sachin Kumar Mahato 7 years, 10 months ago

CBSE > Class 12 > Chemistry

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Calculate the density of aluminium in FCC lattice and radius of aluminium atom is 143pm and atomic mass of aluminium is 27

Posted by Aj Choudaj 7 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

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Last 10years paper with solution

Posted by Rameer Sagar 7 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

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Why are lanthanoid & actenoid series keep seprate from periodic table?

Posted by Kanishka Saxena 7 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Kanishka Saxena 7 years, 10 months ago

Nobody here ,able to give the answr..

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Why does the conductivity of a solution decrease with dilution?

Posted by Soni Kumari 7 years, 10 months ago

CBSE > Class 12 > Chemistry

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What is ec

Posted by Anshul Yadav 7 years, 10 months ago

CBSE > Class 12 > Chemistry

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A mixture of two liquids A and B move having bioling point of A is 70°C and B have 100°C distills at 101.2°C as single liquid hence this mixture is non ideal solution showing -ve deviation how???

Posted by Irappa Irappa 7 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Manish Sharma 7 years, 10 months ago

90.4°c

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Emf

Posted by Harsh Rathor 7 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Sanaya Seth 7 years, 10 months ago

Electromotive force - a force which make electron in movement. ..

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Joban Singh 7 years, 10 months ago

Electromotive forces

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What is fcc?

Posted by Akshansh Kumar 7 years, 10 months ago

CBSE > Class 12 > Chemistry

3 answers

Kanishka Saxena 7 years, 10 months ago

Fcc is aka ccp(cubic closed packed) in which the constituent particles present at the corners as well as on each face

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Joban Singh 7 years, 10 months ago

Face centre cubic units in which constitute particle are present in corner and face of cube

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Uday Pratap 7 years, 10 months ago

Fcc is face centered cubic unit cell in which constituent particles present at the corners of the square and centre of each face.

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Why the C-N-C bond angle in trimethyl amine is 108°

Posted by Chirag Rao 7 years, 10 months ago

CBSE > Class 12 > Chemistry

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What is the order of acidic character of - benzyl amine, Ethyl amine and aniline

Posted by Sona Singh 7 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

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Why BP of benzene less than alcohol

Posted by Zark Abid 7 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Kanishka Saxena 7 years, 10 months ago

Question maybe wrong..becoz benzene have high boiling point

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Hasan Ali 7 years, 10 months ago

In alkanes, the only intermolecular forces are van der waals dispersion forces. Hydogen bond are much stronger then these, and therefore it takes more energy to brake. This is the only reason for high boiling point of benzene

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Why benzylic halides show high reactivity towards SN1reaction

Posted by Rajesh Dwivedi 7 years, 10 months ago

CBSE > Class 12 > Chemistry